ECE474S09_Lecture30

# ECE474S09_Lecture30 - ECE 474 Principles of Electronic Devices Prof Virginia Ayres Electrical Computer Engineering Michigan State University

This preview shows pages 1–14. Sign up to view the full content.

ECE 474: Principles of Electronic Devices Prof. Virginia Ayres Electrical & Computer Engineering Michigan State University [email protected]

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Chp. 05: Current State-of-Art Transistors Lecture 30: Introduction to pn junctions
Si n p n Si n p n Si n p n OFF I V I V Transistor: a device for binary logic (Chp. 06) ON Saturation regime ON Linear (ohmic) regime

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Si n p n OFF Transistor: a device for binary logic (Chp. 06) p n n Si p n Si
pn junction: Energy picture: p 0 = 10 13 cm -3 n 0 = 10 17 cm -3

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
pn junction: Energy picture: individually: E F E i E V E C E gap = 1.1 eV E F E i E V E C E gap = 1.1 eV 0.407 eV 0.2 eV p 0 = 10 13 cm -3 n 0 = 10 17 cm -3
pn junction: Energy picture: individually: E F E i E V E C E gap = 1.1 eV E F E i E V E C E gap = 1.1 eV 0.407 eV 0.2 eV p 0 = 10 13 cm -3 n 0 = 10 17 cm -3 Align the Fermi energy levels

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
pn junction: Energy picture: individually: E F E i E V E C E gap = 1.1 eV E i E V E C E gap = 1.1 eV 0.407 eV 0.2 eV p 0 = 10 13 cm -3 n 0 = 10 17 cm -3 Align the Fermi energy levels
pn junction: Energy picture E F E i E V E C E gap = 1.1 eV E i E V E C E gap = 1.1 eV 0.407 eV 0.2 eV p 0 = 10 13 cm -3 n 0 = 10 17 cm -3 “Connect the dots” E F

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
pn junction: Energy picture

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 04/14/2009 for the course ECE 474 taught by Professor Ayres during the Spring '09 term at Michigan State University.

### Page1 / 14

ECE474S09_Lecture30 - ECE 474 Principles of Electronic Devices Prof Virginia Ayres Electrical Computer Engineering Michigan State University

This preview shows document pages 1 - 14. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online